1 /**
2 * \file texobj.h
3 * Texture object management.
4 */
5
6 /*
7 * Mesa 3-D graphics library
8 *
9 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27 * OTHER DEALINGS IN THE SOFTWARE.
28 */
29
30
31 #ifndef TEXTOBJ_H
32 #define TEXTOBJ_H
33
34
35 #include "compiler.h"
36 #include "glheader.h"
37 #include "mtypes.h"
38 #include "samplerobj.h"
39
40
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
44
45
46 /**
47 * \name Internal functions
48 */
49 /*@{*/
50
51 extern struct gl_texture_object *
52 _mesa_lookup_texture(struct gl_context *ctx, GLuint id);
53
54 extern struct gl_texture_object *
55 _mesa_lookup_texture_err(struct gl_context *ctx, GLuint id, const char* func);
56
57 extern void
58 _mesa_begin_texture_lookups(struct gl_context *ctx);
59
60 extern void
61 _mesa_end_texture_lookups(struct gl_context *ctx);
62
63 extern struct gl_texture_object *
64 _mesa_lookup_texture_locked(struct gl_context *ctx, GLuint id);
65
66 extern struct gl_texture_object *
67 _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target);
68
69 extern struct gl_texture_object *
70 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target );
71
72 extern void
73 _mesa_initialize_texture_object( struct gl_context *ctx,
74 struct gl_texture_object *obj,
75 GLuint name, GLenum target );
76
77 extern int
78 _mesa_tex_target_to_index(const struct gl_context *ctx, GLenum target);
79
80 extern void
81 _mesa_delete_texture_object( struct gl_context *ctx,
82 struct gl_texture_object *obj );
83
84 extern void
85 _mesa_copy_texture_object( struct gl_texture_object *dest,
86 const struct gl_texture_object *src );
87
88 extern void
89 _mesa_clear_texture_object(struct gl_context *ctx,
90 struct gl_texture_object *obj);
91
92 extern void
93 _mesa_reference_texobj_(struct gl_texture_object **ptr,
94 struct gl_texture_object *tex);
95
96 static inline void
_mesa_reference_texobj(struct gl_texture_object ** ptr,struct gl_texture_object * tex)97 _mesa_reference_texobj(struct gl_texture_object **ptr,
98 struct gl_texture_object *tex)
99 {
100 if (*ptr != tex)
101 _mesa_reference_texobj_(ptr, tex);
102 }
103
104 /**
105 * Lock a texture for updating. See also _mesa_lock_context_textures().
106 */
107 static inline void
_mesa_lock_texture(struct gl_context * ctx,struct gl_texture_object * texObj)108 _mesa_lock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
109 {
110 mtx_lock(&ctx->Shared->TexMutex);
111 ctx->Shared->TextureStateStamp++;
112 (void) texObj;
113 }
114
115 static inline void
_mesa_unlock_texture(struct gl_context * ctx,struct gl_texture_object * texObj)116 _mesa_unlock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
117 {
118 (void) texObj;
119 mtx_unlock(&ctx->Shared->TexMutex);
120 }
121
122
123 /** Is the texture "complete" with respect to the given sampler state? */
124 static inline GLboolean
_mesa_is_texture_complete(const struct gl_texture_object * texObj,const struct gl_sampler_object * sampler)125 _mesa_is_texture_complete(const struct gl_texture_object *texObj,
126 const struct gl_sampler_object *sampler)
127 {
128 /*
129 * According to ARB_stencil_texturing, NEAREST_MIPMAP_NEAREST would
130 * be forbidden, however it is allowed per GL 4.5 rules, allow it
131 * even without GL 4.5 since it was a spec mistake.
132 */
133 if ((texObj->_IsIntegerFormat ||
134 (texObj->StencilSampling &&
135 texObj->Image[0][texObj->BaseLevel]->_BaseFormat == GL_DEPTH_STENCIL)) &&
136 (sampler->MagFilter != GL_NEAREST ||
137 (sampler->MinFilter != GL_NEAREST &&
138 sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) {
139 /* If the format is integer, only nearest filtering is allowed */
140 return GL_FALSE;
141 }
142
143 if (_mesa_is_mipmap_filter(sampler))
144 return texObj->_MipmapComplete;
145 else
146 return texObj->_BaseComplete;
147 }
148
149
150 extern void
151 _mesa_test_texobj_completeness( const struct gl_context *ctx,
152 struct gl_texture_object *obj );
153
154 extern GLboolean
155 _mesa_cube_level_complete(const struct gl_texture_object *texObj,
156 const GLint level);
157
158 extern GLboolean
159 _mesa_cube_complete(const struct gl_texture_object *texObj);
160
161 extern void
162 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj);
163
164 extern struct gl_texture_object *
165 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex);
166
167 extern GLuint
168 _mesa_total_texture_memory(struct gl_context *ctx);
169
170 extern GLenum
171 _mesa_texture_base_format(const struct gl_texture_object *texObj);
172
173 extern void
174 _mesa_unlock_context_textures( struct gl_context *ctx );
175
176 extern void
177 _mesa_lock_context_textures( struct gl_context *ctx );
178
179 extern void
180 _mesa_delete_nameless_texture(struct gl_context *ctx,
181 struct gl_texture_object *texObj);
182
183
184 /*@}*/
185
186 /**
187 * \name API functions
188 */
189 /*@{*/
190
191 extern void GLAPIENTRY
192 _mesa_GenTextures(GLsizei n, GLuint *textures);
193
194 extern void GLAPIENTRY
195 _mesa_CreateTextures(GLenum target, GLsizei n, GLuint *textures);
196
197 extern void GLAPIENTRY
198 _mesa_DeleteTextures( GLsizei n, const GLuint *textures );
199
200
201 extern void GLAPIENTRY
202 _mesa_BindTexture( GLenum target, GLuint texture );
203
204 extern void GLAPIENTRY
205 _mesa_BindTextureUnit(GLuint unit, GLuint texture);
206
207 extern void GLAPIENTRY
208 _mesa_BindTextures( GLuint first, GLsizei count, const GLuint *textures );
209
210
211 extern void GLAPIENTRY
212 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures,
213 const GLclampf *priorities );
214
215
216 extern GLboolean GLAPIENTRY
217 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures,
218 GLboolean *residences );
219
220 extern GLboolean GLAPIENTRY
221 _mesa_IsTexture( GLuint texture );
222
223 extern void GLAPIENTRY
224 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset,
225 GLint yoffset, GLint zoffset, GLsizei width,
226 GLsizei height, GLsizei depth);
227
228 extern void GLAPIENTRY
229 _mesa_InvalidateTexImage(GLuint texture, GLint level);
230
231 /*@}*/
232
233
234 #ifdef __cplusplus
235 }
236 #endif
237
238
239 #endif
240